Walker 242-91161 Ignition Knock (Detonation) Sensor

Walker Knock Sensor for OE Replacement

Walker Products Ignition Knock (Detonation) Sensor 242-91161 is an OE replacement sensor for gasoline engines that need accurate knock detection and factory-style electrical output. It is built for direct fitment in the original threaded location and is compatible with 2001-2005 Hyundai Accent, 2001-2003 Hyundai Elantra, and 2003 Hyundai Tiburon applications.

Walker Full Service Kit parts are built to restore original sensor function with OE-style fit and calibration. For vehicles such as the Hyundai Accent and Hyundai Elantra, this line focuses on direct replacement components that match the factory connection and sensing requirements.

Key Features

• OE replacement ignition knock sensor for engine vibration monitoring
• Engineered for the correct frequency range, sensitivity, and electrical output
• Blade terminal design with 1 rectangle female connector and 2 male terminals
• Heat- and oil-resistant construction for engine block and cylinder head environments
• Direct fit into the original threaded mounting location
• No wiring harness included
• No mounting hardware included

Detailed Description

Walker 242-91161 monitors engine vibration and sends a signal to the ECU when detonation is detected, allowing ignition timing to be adjusted in real time. That response helps reduce spark knock, protect internal engine components, and maintain stable drivability. This sensor is tuned to the resonant knock frequency of the intended engine platform, which supports accurate spark retard when abnormal combustion occurs. If you are replacing a failed knock sensor on a 2001-2005 Hyundai Accent, 2001-2003 Hyundai Elantra, or 2003 Hyundai Tiburon, this part number provides a direct OE-style service solution.

This part cross-references Standard Ignition KS218 for the same application.

Common Issues This Part Can Address

• Knock sensor fault codes such as P0325 or P0330
• Audible spark knock or detonation under load
• Incorrect ignition timing response from the ECU
• Reduced fuel economy caused by knock-related timing changes
• Drivability concerns tied to failed engine knock detection

Installation Notes and Tips

Verify connector shape, terminal count, and threaded mounting location before installation. The sensor uses a female rectangle connector with blade terminals, so the factory harness should match directly. Clean the mounting surface and inspect the engine block or cylinder head threads before installing Walker 242-91161. Because no mounting hardware or wiring harness is included, reuse the original serviceable components where applicable.

Quality Assurance

Walker knock sensors are manufactured to OE replacement standards for fit, sensitivity, and electrical output. The sensor construction uses materials selected for heat and oil exposure in the engine bay, and the design follows factory-style installation requirements for the listed Hyundai applications.